神二十返回舱受损细节公布

Core Viewpoint - The increasing number of space debris poses a significant threat to the safety of spacecraft, satellites, and astronauts, leading to the emergency suspension of the Shenzhou 20 mission due to a discovered crack in the spacecraft's window [1][3]. Group 1: Incident Overview - On November 5, 2025, the Shenzhou 20 return mission was urgently paused after a routine inspection revealed an abnormal phenomenon at the edge of the spacecraft's window [3]. - The initial assessment by the chief designer of the crewed spacecraft system indicated that the crack was likely caused by space debris smaller than 1 millimeter, but traveling at high speed, resulting in a significant crack size of several millimeters [1][3]. Group 2: Damage Assessment - The crew took photographs of the abnormal area from different angles and lighting conditions, and additional images were captured using the space station's robotic arm [7]. - Experts from over ten domestic glass-related industries were organized to evaluate the damage based on the transmitted images [7]. - The consensus among experts confirmed the presence of a penetrating crack that went through the entire thickness of the glass [9]. Group 3: Decision Making - Less than 12 hours after confirming the crack, the mission command made the decision to delay the Shenzhou 20 return mission [10].